YouTube use to have a good advert for the Chromax addons.Off to Google .
It was extortionate - and I think Noctua finally realised that they needed to conform to the general consensus that black and not insipid beige looks better in a windowed case and released a cooler colour that pleased the masses.
They must have lost a lot of sales over the years due to their intransigent stance on colour scheme. But, made a name/infamous as quality as a result.